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AUSCERT External Security Bulletin Redistribution
ESB-2009.0535 -- [Win][UNIX/Linux]
Apache Tomcat: Modify Arbitrary Files
11 June 2009
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AusCERT Security Bulletin Summary
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Product: Tomcat 6.0.0 to 6.0.18
Tomcat 5.5.0 to 5.5.27
Tomcat 4.1.0 to 4.1.39
Publisher: The Apache Software Foundation
Operating System: UNIX variants (UNIX, Linux, OSX)
Windows
Impact: Modify Arbitrary Files
Access: Remote/Unauthenticated
CVE Names: CVE-2009-0783
Original Bulletin: http://tomcat.apache.org/security-6.html
http://tomcat.apache.org/security-5.html
http://tomcat.apache.org/security-4.html
Revision History: June 11 2009: Document number changed from
ESB-2009.0691 to ESB-2009.0535
June 5 2009: Initial Release
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CVE-2009-0783: Apache Tomcat information disclosure vulnerability
Severity: low
Vendor:
The Apache Software Foundation
Versions Affected:
Tomcat 6.0.0 to 6.0.18
Tomcat 5.5.0 to 5.5.27
Tomcat 4.1.0 to 4.1.39
The unsupported Tomcat 3.x, 4.0.x and 5.0.x versions may be also affected.
Description:
Bugs https://issues.apache.org/bugzilla/show_bug.cgi?id=29936 and
https://issues.apache.org/bugzilla/show_bug.cgi?id=45933 allowed a web
application to replace the XML parser used by Tomcat to process web.xml,
context.xml and tld files. If a web application is the first web
application loaded, these bugs allow that web application to potentially
view and/or alter the web.xml, context.xml and tld files of other web
applications deployed on the Tomcat instance.
Mitigation:
6.0.x users should do one of the following:
- upgrade to 6.0.20
- apply these patches
- http://svn.apache.org/viewvc?rev=739522&view=rev
- http://svn.apache.org/viewvc?rev=652592&view=rev
5.5.x users should do one of the following:
- upgrade to 5.5.28 when released
- apply these patches
- http://svn.apache.org/viewvc?rev=781542&view=rev
- http://svn.apache.org/viewvc?rev=681156&view=rev
4.1.x users should do one of the following:
- upgrade to 4.1.40 when released
- apply this patch http://svn.apache.org/viewvc?rev=781708&view=rev
Example:
See https://issues.apache.org/bugzilla/show_bug.cgi?id=29936#c12 for an
example web application that can be used to replace the XML parser used
by Tomcat.
Credit:
The security implications of these bugs was discovered and reported to
the Apache Software Foundation by Philippe Prados.
References:
http://tomcat.apache.org/security.html
http://tomcat.apache.org/security-6.html
http://tomcat.apache.org/security-5.html
http://tomcat.apache.org/security-4.html
The Apache Tomcat Security Team
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